A store owner arrange shoes boxes into row such as follow.she places one box in the top row,two in the four row, and so on.lf the number of boxes in each row increases in the same way.how many boxes does she place in the tenth row?

to in the four row??

what does that even mean?
and what about rows 2 and 3?
In any case, this will be an AP, with a=1
figure out d, and then use the 10th row has a+9d boxes